I just got mine a few days ago. Initially I was pretty disappointed because they didn't sound as good as my similarly priced 4-year old q-jays. They had more bass range and power but it wasn't as tight. Things sounded distant. Then I pulled the headband farther forward and everything sounded better, they found a better seal.
The second day of listening I heard some occasional high pitch buzzing, but that has gone away now by the fourth day. When I found this thread I tried applying pressure. With just the right amount, not too much, the difference in sound is noticeable. The already satisfactory bass becomes richer and tighter, sounding about twice as good to me. The mid and high range also sound much better.
Bending the headband doesn't seem to cause much clamping force for me, it's pretty flexible. I bent it some and it has helped a little, but still not the same as pressing on them. The pads seem to come off easily, and I will experiment with some cotton balls perhaps or foam. I can hear that these have a great potential when they fit correctly.
With a slight EQ tweak they sound very good, just increasing the very top and very bottom slider a bout 6 db, I can get plenty of sub bass and sparkle. Minor EQ tweaks make a really big difference and it doesn't take much adjustment to get just the sound I want. They don't have the super clarity of the q-jays but they are a much more overall balanced sound and that is exactly what I was looking for.
Now I just have to figure out how to clamp them on better, and start saving money for a pocket amp..
Talk with Shadowox8 he has made some nice Head Phone mods to the pads!